$B 2II _ MICROBIOLOGY

LINMERSITI

_{SAINS MALAYS}

IA

Final Examination Academic Session 20081 2009

April2009

$B 2II _ MICROBIOLOGY

IMTKROBTOLOGTI

Duration:

3 hours

[Masa:

^{3 jamJ}

Please ensure that

this

examination paper

contains TIIREE

printed pages before you

b"g-

the examination.

Answer FM

questions. You may answer either in Bahasa Malaysia or in English.

All

answers must be written in the answer booklet provided.

Each question is worth _{20 marks and the mark} for each sub question is given at the end

of

that question.

Sila pastilwn

bahawa kertas peperilcsaan

ini

mengandungi

TIGA muka surat

yang bercetak sebelum anda memulakan peperiksaan ini.

Jawab LIMA soalan. Anda

dibenarkan _menjawab soalan sama ada dalam Bahasa Malaysia atau Bahasa Inggeris.

setiap jawapan _mesti dijawab di dalam bulat jawapan yang disediakan.

Setiap soalan

bernilai 20

markah dan markah _subsoalan diperlihatkan di penghujung subsoalan itu.

81

...2t-

-2-

l.

Describe the

contibutions

of microbes as ^: Hurailmn sumbangan mikrob sebagai :

(a)

Recyclers of nutrients Pengkitar nutrien

lJrB ²¹¹¹

[0

^marks]

O)

Photosynthesizing organisms Or ^ganis ma fot ^{o s intes i s}

[10 marks]

2. (a)

Differentiate between yeast and hyphal types of fungal cells.

Bezakan antara sel htlat

jenis

yis dan

jenis

_hifa.

[5 marks]

Describe the asexual and sexual reproduction of fungi.

Hurailran pembialmn takberselu dan berseks latlat.

[15 marks]

3. By giving

^specific examples, describe the

five

modes

of

drug action on bacterial cells.

Dengan memberi contoh khusus, huratkan lima mod tindakan ubatan ke atas sel balaeria.

[20 marks]

With the aid of

labelled diagrams, describe

the multiplication cycle of

T-even bacteriophages in bacterial host.

Dengan bantuan gambar rajah berlabel, huraikan

kitar

pembiakan

baheriofaj

T- genop dalam perumah baHeria.

[20 marks]

o)

82

...3/-

Describe the

following

based on the effectiveness

in

controlling microorganisms, suitability under specified conditions and mode of action ^:

Huraikan

yang berilatt

berdasarkan kepada lceberkesanan pengawalan milvob, lresesuaian dalam keadaan khusus dan mod tindakan

(a)

Moist heat Haba lembap

-3-

(b) Dry heat Haba kering

(c)

Filtration Penurasan

(d)

Ultraviolet radiation

S inar an ul trale mb ayun

g

Briefly

differentiate the following pairs :

(a)

Heterotrophs and autotrophs

(b)

Active transport and passive transport

(c)

Infection and disease

(d)

Lag phase and stationary phase

(e)

Catabolism and anabolism

Secara ringlras bezakan pasangan berilrut :

(a)

Heterotrof dan

autotrof

(b)

Penganglcutan aldif dan penganglattan

pasif

(c)

Jangkitan dan penyakit

(d)

Fasa lag danfasa pegun

(e)

Katabolisme dan anabolisme

- oooOooo -

urB 2l ll

[5 marks]

[5 marks]

[5 marks]

[5 marks]

6.

B3

[20 marks]